peiler



July 3,1928. 1375,'819' A K. E. PEILER APPARATUS FOR FEEDING MOLTEN GLASS Filed Jan. 27, 1925 3 Sheets-Sheet 2 Inmo/2502.-

Patented July s, 192s;

UNITED STATES HARDE. PEILER, OF WEST HARTFORD, CONNECTICUT, ASSIGNOR TO HARTFORD-EMPIRE COMPANY, OF HARTFGRD, CONNECTICUT, A CORORATION OF DELAWARE.

APPARATUS FOR FEEDING MOLTEN GLASS.

Application filed January 27, 1923.

-This invention relates to apparatus for separating n'iolten glass into mold charges, its object lisinoto feed the glass in successive suspended masses of anypredetermined size and shape for delivery to the molds of glass shaping n'iachines, so as to adapt the fee .e

apparatus to produce mold chaiges el a size and shape best suited for the production of any of the numerous sizes and shapes of l0 commercial glassware.

By the present method the molten glass flowed or fed from the forbheartfh of a furnace or otherreceiiitacle through the interior of va reciprocating hollow plunger liavi I adjust-able means for throttling or regulating the resistance to the flow of glass therethrough or through the outlet over which the plunger operates. The r tance regulating means may be given any desired shape and size and may move with the plunger or be held stationary. it is preferably in the 'form of a valve, which in one case is adaptw ed to throttle the plunger outlet, and in another case i1 is adaptul to `throttle the containerA outlet. ln each of these cases it may be adjusted so as to increase or diminish the resistance to the flow of gla s to or through the discharge outlet, or to discontinue such resistance altogether.

The glass flowing into the plunger sequestered in an annular column formation therein, over and in alignment with the out let, the top of the column being surrounded by and fed directly from the interior of the main body of glass, which thus forms a heated environment around the column, besides serving as a replenishing source for the top of the column. The effect of the column movementrn either forwardly or baelwardly assisted by adhesive contact of its surfaces with the interior surrounding wall of the moving plunger, which is of advantage in controlling the movement of the glass at the outlet. Y

Other features of the invention will appear from the description to follow.

.ln the drawings:

Figure l is a sectional elevation of a 1nachine embodying the invention, with the hollow plunger shown at about its lowermost positiong' V Fig. l is a fragmentary sectional elevation with the plunger shown at about its uppermost position;

Serial N0. 615,308.

. p sectional plan on line 3-3 of Fir:

j. e, is a side elevation looking at the right of Fig, l, showing the plunger operating mechanism;

Fig. is a sectional elevation of a modilied form of the invention, with the hollow plunger shown at about its lowermost position; and

Fig. (S is a fragmentary sectional elevation with the plunger at about its uppermost position.

The supply of molten glass l0 may flow from a, furnace or melting tank of any well known type to the container ll, which may forni a foreh'xarth to the furnace. The container is provided with a well l2 terminat/ingl in a snlnnerged outlet. 13 formed in the removable ring 14;. The size of the outlet is adapted to the size of the charges to be made, one of the vcharges being innicated at 15 ready for severance by the shear blades lo wiiich may be of any known construction, and adjustable to sever at any desired height and in desired time relation to the plunger' movements.

Projecting into the outlet well lil is a` hollow plunger 17, preferably adapted to tit the well as closely as practical, consistent with satisfactory operation of the plunger. rlhe intention is to flow all or the greater portion of the glass forming the mold charges through the plunger. 'fl`herefore, the glass in the well outside of the plunger serves merely or mainly as a packing betweeuthe plunger and wall of the well to enable the plunger to operate as a piston therein.

Communicating' with the passage 18 of the plunger are one or more inlet openings 19 thr ugh the plunger wall, of the required flow capacity, which remain constantly open for the inflow of glass to the submerged out let- 13. These inlets extend both above and below the top of the well, thus allowing a free inflow of glass tothe plunger at all positions thereo".

The sise of the internal flow passage 18 of the plunger may conveniently be regulated by the insert-ion therein of different size flow regulating members 20, adjustable to both vary t-he resistance to flow in the passage and to act as a valve for regulating the size of the discharge opening 21, which is preferably ma le about equal to the size of the outlet 13. If the regulating memberl is raised to a point where it n o longer throttles the outlet 21, it is still capable ot' adjustment to diilercnt points above the outlet and can tliereby be made tool'ler diilferent degrees of resi. .ance to the flow el' glass in the plunger, and hence continues to act as a iiow resistance regulating member independently of its function as a valve.

By adjusting the regulating member to throttle the outlet 2l, various retractive and extrusive effects may be produced at the outlet, depending upon the results desired in the et the snended gathers.

lli desired, the throttling` of the outlet 21 may be used to vary the weight of the mold charges, but it is pret- 'able to use this throttling only for shape control and to use other means rer weight control.

The ,hollow plunger may be operated in conjunction either with a liXed or an adjustv able head ogt glass, because adj usting the head is a convenient way of regulating the w( ht ot thechargcs. This head may be i by any suitable means` such as the which may be adjusted by any suitable means, not shown. A

As the plunger rises it tends to create aV voidvin the well beneath it, which void may be satislied by the inflow of the glass flowing downwardly through the plunger, or by the glass retarded or retracted in the outlet, or by a combination ot. both, according to the character and especially the speed of the plungerV movements. j When the plunger lgiven a rapid upward movement, the retarding or retractive eilfect through the outlet will be greater than il the plunger is moved slowly.

rEhe downward or extrusion impulses of the plunger' are also utilized to control the shape oi the mold charge, both at its upper end and through its body while it is passingv through and accumulating beneath the outlet. Stronger downward impulses increase the diameter ot' the portions of the gather then vbeing extruded. Thus the movements ot the ,Vilungei.' may be adapted to produce the desired shape ot the mold charges, the plunger being reciprocated periodically at the times, and to the extent required for assisting, retarding, and, if desired, reversing Athe gravitational flow oit glass through the outlet, any or all ott which iniiuences may be utilized to control and vary the shape orp the suspended gathers or mold charges to theY desired extent.

The desired changes in the shapes or" the charges may also be etlected by proportioning the discharge passages of the container and internal iiowV plunger, or by varying the character of the movements of the plunger, or the time and amplitude ofV its stroke, or byv varying its, working range within the well or submerged outlet, these variations being determined by the contour of the cam for operating the plunger, diiierent shaped cams being employed to produce diiilerent results.

rllhe severing mechanism will be timed to correspond to the formation of the charges, the remaining stub from which the charge is severed being preferably retracted into Vthe outlet. by the upward movement of the plunger, the retraction beginning either betore, after, or during severing as desired, depending upon the shape of charge desired.

The plunger tube 17 is adj ustably clamped upon an arm 28, removably connected with a reciprocally mounted bracket 24 guided by ways Q on the container 11.

rllhe regulating member is suitably clamped upon an arm 26, having a bearing portion 27 mounted to slide upon a post 28 extending upwardly from the arm 23. The arm 26 is adapted to hold the member 20 properly centered within the plunger. Rotation ot the arm 26 upon the post 28 is prevented by a key Q9 inserted in a splineway 3() :termed in the post, the key being preferably o rtended longitudinally through the bearing 2T and having projections at its ends extending into notches formed in the ends ot the bearing. Adjustment of the regulating member 20 longitudinally of the )lun er is ellccted by turning the handle 3l oi feed screw 32 threaded through the arm Q6 and extending into engagement with the vplunger carrying arm 23.

Reciprocation of the plunger 17 and the parts supporting it is effected by an adjustable cam 33 on a suitably driven shaft 3d through connections, comprising a lever mounted on a liXed stud 3G and having a roll 37 engaging the cam The horizontal arm of the lever is slotted at 3S and adjustab'ly connected with a link 39 pivotally connected at 40 to the plunger' carrying bracket 24'. The connection between the link e9 and lever 35 is adjustable and comprises a stud 4-1 having a square central portion l2 slidable in the slot 38 of the lever and also a threaded portion `ari-ying a hand wheel 43 by which the stud may be clamped upon the lever. The link 39 is forked to receive thev slotted arm fot the lever, one side of the fork being pivoted upon the head of the stud 41 and the other upon the hub of the hand wheel 43. This construction permits the connection between the link and lever to be adjusted toward or from the pivot 36 of the lever while the machine is in operation, thus varying the effective leverage ot the lever and thereby varying the length of the stroke ot the plunger. The length of the stroke of the plunger may be varied without changing its lowest position, by making the slot 38 in the form of an are having its center at t() when the plunger is at its lowermost position.

In order to effect adjustment of the plunger 17 relative to the outlet, so that its range of vertical movementwithin the well may be slightly varied, the pivot pin of the link 24 is provided with an eccentric bushing 44 rotatable -upon the pivot pin. The bushing extends through the lower end et the link, the latter being spilt and clamped upon the bushing by tightening the clamp screw 45. rllhe bushing is provided with a handle 46 by which it may be rotatedto etlect the desired adjustment ot' the plunger longitudinally within the well.

The cam 38 is removably mounted upon the shaft 34 in order that it may be readily .replaced by other cams for varying the plungermovements to regulate the discharge of the glass, the contour of each cam being adapted to allord the particular results desired in theoperation ol the machine -from time to time. i

Where it is desired to feed mold charges to two or more shaping machines producing articles of different shapes or sizes, or both, the plunger operating cam may be provided with the desired `number' of lobes oit' the proper contours, so that for cach revolution of the cam shaft a series of mold charges or" the required shapes and sizes will be produced. v

The arm 23 and the plunge' and other parts carried thereon may be readily dctached from the bracket 24 as a unit, by unscrewing thebolts 47V connecting `the arm with the bracket.

In the modilication shown in Figs. 5 and 6, the plunger 48 on the arm 49 is ope-rated in the same manner and preferably by the same means as the plunger 17, but the regulating member 50, instead ot moving with the plunger, is made stationary and constitutes a flow resistance regulating member at all positions of adjustment. It the regulating member50 is adjusted in thehigher positions, where it is mostly within the hollow plunger, it acts mainly to regulate the resistance to flow through the plunger' passages and thus'varies the retractive and eX- trusive effects due to the movementsof thev of the plunger is provided with inlet open-` ings 54 corresponding to the openings 19 in the plunger shownin Fig. 1.

Adjustment of the regulating member 50 relative to the outlet 51 is effected by turning the handle 55 ci a l'eed screw 56 threaded through the arm 57, the lower end ot the screw lengaging a plate 58 on'the top ot the container 11.

The arm 57 is adjustably clamped upon the member 50 and is provided with a bearing 59 arranged to slide upon the post 60 extending upward y :from the plate 58. A key 61 extends through the bearing and projects into the splineway 62 ot' the post to prevent the arm 57 from turning, whereby the member 50 is maintained in proper alignment, centrally ot the plunger 48.

Reciprocation o'l the plunger 48 and the bracket 24 supporting it will be eiiected by the cam mechanism shown in Fig. 4 and adj ustment of the plunger relative to the outlet can also be effected by changing the position of the eccentric bushing 44 shown in Fig. 4.

The illustrated embodiment of the invention may be modified in construction, arrangement, and mode ot operation by those skilled in the art, without departing from the scope of the invention as defined in the appended claims.

Certain features disclosed but not claimed in the present application, form a part et the subject matter ot copend ing applications of the present inventor, Serial No. 605,681, liled December 8, 1922, and Serial No. 543,571, filed March 14, 1922.

The claims 'et' this application are directed to features generic to the 'forms ot' apparatus embodying the invention as illustrated in Figs. 1 to 4 inclusive, and 5 and 6 ol the drawings of thev application, or to features specilic to the form otapparatus shown in Figs. 5 and 6 oit' the drawings. Claims directed particularly to features specilic to the form of apparatus shown in Figs. 1 to 4 inclusive of the drawings of the present application are not included herein, but are made in my copending divisional application, Serial No. 168,952, filed Feb. 17, 1927.

I cla-im:

1. In apparatus for segregating mold charges from a body of molten glass, the combination with a glass container provided with a discharge outlet, ot a plunger operable within the container and having an internal iiow passage lor the glass to the outlet, a flow resistance regulating member adjustable in said passage relative to said discharge outlet, and means for actuating said plunger' to periodically accelerate and retard the i'low of glass at the outlet.

In apparatus` for segregating mold charges from a body vot molten. glass, the combination with a glass container provided with a well terminating in a discharge outlet, of a plunger projecting into the well and provided with an internal flow passage communicating withthe glass above its disoli' glass in the container.

charge end at all positions of the plunger', means for varying the resistance to the. l'low ot glass in said passage, and means for reciprocating the plunger within the well.

3. In apparatus for segregating mold charges trom a bod)7 of molten glass, the

combination with a. 0'lass container rovided with a wellk terminating in a discharge outlet, of a plunger projecting into the well and having a constantly open passage for the How or' glass to the outlet, a llow regulating member located within the passage and adjustable relative to the outlet, means for reciprocating the plunger in the well, and means 'for varying the hydrostatic head Ll. In apparatus tor segregat-ing mold charges -from a body of molten glass, the combination with a glass container provided withv asubmerged outlet, ot' a plunger operable within the container relative to the outlet and having a constantlyopen internal flow passage for the glass to the outlet, means adjustable to vary the resistance to the llow of glass in said passage, means for with the glass above its discharge end at, allV positions of the plunger, means for regulating the resistance to flow in said passage, andmeans for` actuating the plunger to periodically accelerate or retard the gravitational llow to the outlet.

6. In apparatus for segregating mold charges from a `body of molten glass, the combination with a glass container provided with a discharge outlet, of a movable member provided with a flow passagecommunieating at its upper end with the body of glass and at its lower end with the outlet, means'tor regulating the resistance to liow in said passage, and means for moving said member to periodically raise and lower its contained glass to modify the gravity tlow.

therethrough.

7. In apparatus for segregating mold chargesy Tfrom a body of molten glass, the combination with aA glass container provided with a discharge outlet, of a plunger oper-V able within the container relative to the outlet and having an internal flow passage for the glass to the outlet, means for varying the Vresistance to the llow of glass in said passage, and a cam controlled operating mechanism tor theplung'er, including means for adjusting the limits of its movements.

8. A glass feeder comprising in combination a container for molten glass having an outlet opening through which the glass issues, a regulating plunger, means to reciprocate the plunger toward and from the outlet, and a stationary core controlling the size of the outlet.

9. A glass feeder comprising in combination a container for molten glass having an outlet opening through which the glass issues, a hollow regulating plunger, means to reciprocate the plunger toward and from the outlet, and a stationary core within the plunger.

l0. A glass feeder comprising in combination a container for molten glass having an outlet opening through which the glass issues, a hollow regulating plunger, means to reciprocate the plunger toward and from the outlet, and a stationary core extending through the plunger and protruding beyond the plunger into the outlet.

11. In a glass feeder, the combination of a container for molten glass having an outlet opening in its bottom, a core projecting downward into the glass over the outlet, means for adjusting the core up and down, the walls of the core and outlet being shaped to cause a variation in the effective area et' the outlet by said adjustment of the core, a mechanical regulator surrounding the core, and automatic means to periodically move the regulator toward and from the outlet.

l2. A glass feeder comprising in combination, a container for molten glass having an outlet through which the glass issues, a hollow plunger projecting into the outlet and provided with a passageway between thc interior of the plunger and the molten glass in the container above the outlet, a llow regulating core within the plunger and extending into the outlet, and means for adjusting the vertical position of the core.

13. A glass feeder comprising in combination, a container for molten glass having an outlet through which the glass issues, a tubular plunger projecting into the outlet and having a lateral passageway connecting the inside of the plunger and the glass in the container, means to reciprocate the plunger while its lower end remains within the outlet, a statioi'iary core within the plunger and projecting from both ends thereof, and means enga-ging the upper end of the core for adjusting it vertically.

let. In apparatus for segregating mold charges from a body of molten glass, the combination with a glass container having a well terminating in a discharge outlet, a tubular member projecting into the glass in the well, a solid member within said tubular member, and means for reciprocating' said tubular member toward and from the outlet.

15. In apparatus for segregating mold charges from a body ot molten glass, the

loo

lil

combination With a glass container provided with a Well terminating in a discharge outlet, of a periodically reciprocating hollow plunger iitting the Well closely enough to prevent appreciable discharge of glass past the outside oi the plunger and adapted to permit flow out glass internally thereof to the outlet, means for reciprocating the plunger, and means for regulating the resistance to flow through the plunger.

16.111 apparatus for segregating mold charges from a body of molten glass, the

combination with a glass container provided With a Well terminating in a discharge outlet, oi a periodically reciprocating internal flow plunger fitting the Well closely enough to prevent appreciable discharge of glass past the outside of the plunger, and having its lower end constantly Within the Well, means for reciprocating the plunger, and means for regulating the resistance to flow through the plunger.

Signed at Hartford, Connecticut, this 25th day of January, 1923.

KARL E. PEILER. 

